Manipulator for rolling mills



Nov. 18, 1924.

R. D. OSGOOD. MANIPULATOR FOR 'ROLLING MILLS 3 Sheets-Sheet 1 nvemboz Filed July io Nov. is, 1924.

R.- D. OSGOOD MANIPULTOR FOR ROLLING MILLS 3 Sheets-Sheet 5 Patented Nov. 18, i924.

y mrs lars P ATE. N T 'O'FFI CE ROLLIN Iii-ELVIS `0SGOOD, '0F BIRMINGHAM, ALABAIVLA..A v

MANIPULA'TOR FOR ROLLING MILLS.

Application l'ed July. .10, f 1923.

-iof...Alabania, .have .invented .certain new and .useful Improvements l:in Manipulatoris for Rolling Mills, of which the: following is a specification.

My invention .relates .to improvements in mechanism vfor turning blooms, billets, blanks :and similar Work which is vrun-out bet-.Ween the different stands of a rolling mill.

One objectof the invention is to provide a manipulator which Will exert a forcible grip on the bloom. or-other blank regardless of the cross-sectional shape :or dimensions of the `work.

.Aurtherobject is to'p'rovidesuch a mechanism Which-after yit has turned the bloom .will move laterally Jfrom the Work toa position clear of the `path voi .travel of.' the .bloom along the roller table thereby `avoiding'any yinterference -or jamming ofthe Work against the manipulator parts, veven ythough the rolled sect-ion may have Widely forked ends.

l-Ieretofo-re manipulators have beenconstructed with a lifting ymember and 'Ja coun- Ltervveighted holding :member arranged tol be held in Contactv With the bloom rorv vrolled section by means Vof a cam co-actin'g 'With the counterWeig-hted :holding member. vThis .counterweigbting v.holding 'member' .has :in some cases been provided With aniantrfri'c- Ytion roller yWhich contacts with ,tliebloom,. and .after the-bloom bas beenturned 'and :transferred .the same tlias been fed laterally While inacontaot. with the holding member andthe .lifting member.. Witlisuch an arrangement, if the bloom 'has forked ends or is otherwise distorted or 'ofv uneven section, When Yythe bloom is moved or fed .longitudinally by the mill rolls 'there is aptfto be destructive interference between the bloom tand the parts of 'the manipulator 'Whichfwill `cause jamming of :the Work Aand perhaps breakage of the manipulator,I this making it. necessary` 'to shut down the Imill for repairs.

My improved manipulator overcomes these disadvantages' because after the bloom has been turned lthe gripping .mechanism I em.- ploy 'is adapted to disappear, `that is to say, it is adapted '.to get "outof 'the Way of the Work.

Serial No. 650,610.

The invention .is illustratedin the accompanyingdrawings 1n WhicliFig. l is a 'top -plan showing the manipula-tor.andits'open parts .drawn to. the extreme. fleftlor. '.clear position.

F ig. .2.is -a side-elevation :partly in .section vshowing the manipulatorin .itsadvanced -atingmechanism with 'the .bloom .engaging :1

position .ready to engagea bloom .on la .runf out table, the dotted "lines --illustrating Vthe manipulator parts in their retracted orolear position;

Fig.v 3 4is a `cross-section ron line BH3 of F ig. i2 illustrating a 'sfrictiony device forme-y tarding thel movement- \0'f .the manipulator lcarriage Figs. 4,' 5 .and 6 illustrate .disaient .pesi- Vtions of :the manipulatorpartswin .turning and 'transferring `a bloomv ory billet.

Referring to the drawings 1n.f-detai l,.fl0 isa fbase on which is secured-a pair Yofoperon the arm ola gripping m'ember22 which gripping member isrformedl 'with a bloom engaging portion 24. The grippingmember 22 :is pivotally mounted fon a'fstud' 26 .se-

cured jin the free l'end .fof ift/bent lever'128 Whichlsqsecnred to a shaft 30? mounted in la Icarriage 32.. .The 'carriage .lrides in suit- 'alble `ways '-34 secured totheibed 10. Loos'ely mounted onthef shaft. 130: .iis a f tongue :36 which,fin .J'ull line 'position ishwn'in. Figs. 2 and. 6,.".restsion a '.cross-flange'f ofthe carriage.r Y

The tongue 36 is formed :With 'a...flat`1bloom or proJection Y42.ada.};ited toco-act 'with a dog 44 Whichiis '.pivotavlly 'mounted fon a .pin 46 secured .to the 'bent'.leverfQS; The dog 44 is formed with' a tai1l148whiich iisia'dap'te'd to strike a stop 50 formed on "the carriage'fto Y disengage the 'dog'from the projection 42 afterth'e bloom has been turned and transferred. This'meains 'for engaging ian-'d .disengaging fthe V`tongue 36' 'from 'th'e' fbent levler Q8 permits the manipulatorto 'clear the Work able lugs formed at one end of the carriage as shown. The friction bar slides through a housing 56 which is provided with a triction block 58 which is yieldingly held in Contact with the friction bar 52 by means ot' compression springs 6() encircling the outer ends ot bolts 62 which tend to press the bar G4 lirmly against the friction block 58 clearly shown in Fig. 3.

In operation, assuming that the parts are in full line position, shown in Fig. 2, when the piston rod 16 moves to the lett, the connecting rods 18 will be pulled thus roeking the gripping member 22 about the pivot 26 which action will bring the portion 24 of the gripping member into contact with the bloom B as illustrated in Fig. 4. During this movement the friction exerted by the spring 60 on the bar 52 prevents the carriage from moving to the left. Further pulling on the pitman rods 18 will rock both the tongue 36 and the bent lever 28 about the shaft 30 in a counter-clockwise direction due to the engagement of the dog 44 with the tooth 42.

This rotation will turn the bloom to the upright position shown dotted and indicated at B in Figs. 2 and 6. Toward the end of this movement the bent lever 28 is rocked to such position that the tail 48 of the dog strikes the projection 50 on the carriage and disengages the tongue 36 from the bent lever, This permits the tongue 36 to move to the horizontal position as illustrated in Fig. 6 where it will come to rest against the Hanged cross-member 38 with its upper surtace 40 in a plane lower than the bottom edge Z) of the bloom. The continued pull ot connecting rods 18 will now pull thegripping mechanism and carriage 32 to a position clear ont the table, as shown by the dotted lines in Fig. 2, leaving the bloom B as indicated by the dotted lines in Figs. 2 and 4, supported in the usual manner on rollers R. Thus it is clear that there is no chance of interference between the bloom and any ot the bloomengaging members of the manipulator even though the ends of the bloom are distorted by their pass through the mill rolls.' A

After the 'bloom B, fed longitudinallyT on run-out table. anl it is desired to turn up another bloom B, as shown for example in Fig. 2, the piston rod will be moved to the right which will cause the gripping' member 22 to swing on its pivot 26 until the portion 24 strikes the lug 29 on the bent lever 2S, as shown in Fig. G. The lever 28 and gripping member will now rock together about the shaft 30, without sliding the carriage, due to the friction on the bar 52, whereupon the dog 44 will drop beyond the tooth 42 on the tongue 36 when the bent lever reaches its upright position. lVhen 4the lever reaches its upright position,

it srikes a suitable shoulder 37 on the tongue and further movement of the piston rod then causes the carriage to move to the right to the position shown in full lines in Fig. 2 where the upright portion of said bent lever engages the bloom to be turned.

The connecting rods 18 will again be pulled to the left which will cause the gripping member 22 to swing on its pivot 26 and grasp the billet B whereupon the above described cycle will take place aga-in.

Though l have described with great. particularity the specific embodiment of the invention herein shown, it is not to be construed that I am limited thereto as changes and substitution of equivalents may be made by those skilled in the art without depart ing from the invention.

Throughout the description I have referred to the manipulator mechanism as one for turning up a bloom. It is to be understood that the mechanism is adapted for use on various roll sections and the term bloom as used in the claims is intended to apply with equal force to ingots, billets, slabs, plates and similar' blanks.

Vhat I claim is:

1. A manipulator having members arranged to grip and turn a bloom, means for releasing the grip of said members on the bloom and means to move said gripping members clear of the article turned.

2. A manipulator having members for engagement with a. bloom, and power actuated means for pulling one ot said members to grip or force the bloom against another of the members while turning the bloom and means for releasing the grip on the bloom after it has been turned.

3. A manipulator including two members movable about a Common center, a gripping member pivoted to one ot' said members :and power means for rocking the pivoted member to bring it into gripping engagement with the bloom.

4. A manipulator for turning blooms. comprising a slidably mounted carriage. a friction device for retarding the movement of said carriage, a gripping member, a pair of bloom-engaging members pivoted on said carriage, means for engaging and disengl g' ing said members from one another so that the carriage can 'be moved to a position to avoid interference between the bloom and the aforesaid members.

5. A manipulator including a pair oit bloom-engaging members movable about a common axis, an intermediate member for connecting or disconnecting said bloomengaging members with one another, a pivoted gripping member carried by one of the aforesaid bloomengaging members and means for roc-king said gripping member on its pivot to firmly grip the bloom= 6. A manipulator including a sliclably mounted carriage, a lever pivoted on said carriage, a tongue pivotecl on the same eenter with said lever, a clog carried by said lever and a projection on said tongue whereby the tivo can be moved together or inclependently, a gripping member pivoted on the free end of said lever and power means for moving said gripping member 0n its pivot to grip the bloom between it and said 10 tongue and also for turning said lever and tongue on their pivot to turn the bloom.

In witness whereof, I have hereunto Signed my name.

ROLLIN DAVIS OSGOOD 

